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Molybdenum Wire

Molybdenum Wire

Grade: Mo1、Mo2、Mo3.
Use:The molybdenum wire is principally used in the high-temperature field of molybdenum furnace and radio tube outlets, also in thinning the molybdenum filament, and the molybdenum rod in heating materials for high-temperature furnace, and side-bracket/bracket/outlets wire for heating materials.
Note: Mo1 and Mo2 are grade of pure molybdenum,During production powder of Mo2 is  coarse than Mo1. Mo3 is grade of doping element. “δ” is extend. “Q” is loop incisor. “G” is high temperature.
Size: Min and max diameter of all series molybdenum wiresmust obey rules of following table:


Grade

Mo1,  Mo3

Mo2

Min diameter

200

500

Max diameter

2500

2500


Chemical composition:
Grade

MO content ≥

Total impurity content ≤

Every impurity content ≤

Doping element content ≤

Mo1

99.93

0.07

0.01

--

Mo2

99.90

0.10

0.01

--

Mo3

99.73

0.07

0.01

0.01-0.20

Mo3G

99.33

0.07

0.01

0.20-0.60

Note: Doping element isn’t looked as impurity.
Tensile strength: Tensile strength of molybdenum wire that is used as grid and loop incisor must obey rules of following table.

Diameter

Low limitation of tensile strength/200mm

20-70

 

 

70-120

3.013

0.7845

120-200

2.824

0.7355

Surface quality: Surface is spread graphite milk and shows uniform black color. Severity oxidation and mildew isn’t allowed. Molybdenum wire is easy to get rid off graphite milk then shows metal luster. There isn’t crack、burr、nick and concave pit that can affect use. Slight longitudinal line is allowed for molybdenum wire which diameter isn’t less than 500 um. Very few small burrs are allowed for W2 grade molybdenum wire. Distinct crooked wire is allowed for molybdenum wire which diameter is larger than 150 um.

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